Reactor Netty 1.2.0 is part of 2024.0.0 Release Train.

New and Noteworthy

• HTTP/3 experimental support
  • HTTP server support
  • HTTP client support
• Performance improvements
• Unix Domain Sockets support for NIO transport (requires Java 17)
  • TCP server support
  • TCP client support
  • HTTP server support
  • HTTP client support
• Multi-release jar support
• Reference documentation is migrated to Antora

What's Changed

⚠️ Update considerations and deprecations

• Remove deprecated SslProvider$DefaultConfigurationSpec and SslProvider$DefaultConfigurationType by @violetagg in #3147
• Deprecate SslContextSpec#sslContext(reactor.netty.tcp.SslProvider.ProtocolSslContextSpec) by @violetagg in #3160
• Always add proxy.address tag for the client metrics by @violetagg in #3230
• Resolve on demand the path from the request uri by @violetagg in #3359

✨ New features and improvements

• Dependency updates
  • Depend on Reactor Core v3.7.0 by @chemicL in 9a5a672, see release notes
  • Depend on Netty v4.1.114.Final by @violetagg in #3451
  • Depend on Netty QUIC Codec v0.0.68.Final by @violetagg in #3442
  • Depend on Micrometer v1.14.0 by @violetagg in #3508
  • Depend on Micrometer Tracing v1.14.0 by @violetagg in #3508
  • Depend on Micrometer Doc Generator v1.0.4 by @violetagg in d4ec32e
  • Depend on Context Propagation v1.1.0 by @violetagg in #3164
  • Depend on Brave v6.0.3 by @dependabot in #3172
• HTTP/3 server support
  • Make ProtocolSslContextSpec generic by @violetagg in #3150
  • Add HTTP/3 initial settings by @violetagg in #3152
  • Add HttpProtocol#HTTP3 by @violetagg in #3161
  • Initial HTTP/3 server support by @violetagg in #3176
  • Annotate HTTP/3 server support as incubating by @violetagg in #3183
  • Add wiretap for HTTP/3 frames by @violetagg in #3186
  • Add accesslog for HTTP/3 server support by @violetagg in #3191
  • Add compression for HTTP/3 server support by @violetagg in #3192
  • Add metrics for HTTP/3 server support by @violetagg in #3193
  • Add dependency to Netty HTTP3 Codec for aggregated javadoc by @violetagg in #3197
  • Add SNI support by @violetagg in #3496
• HTTP/3 client support
  • Add HTTP/3 client initial settings by @violetagg in #3311
  • Add HttpProtocol#HTTP3 by @violetagg in #3312
  • When there is no bind address, configure the default one by @violetagg in #3313
  • Add bind support for DefaultPooledConnectionProvider by @violetagg in #3314
  • Add Http3Pool by @violetagg in #3317
  • Initial HTTP/3 client support by @violetagg in #3319
  • Add SNI support by @violetagg in #3496
  • Resolve the remote address by @violetagg in #3507
• Performance improvements
  • Always check idleTimeout configuration before pipeline checks by @violetagg in #3117
  • Always check readTimeout configuration before pipeline checks by @violetagg in #3118
  • Cache the request info when collecting metrics by @violetagg in #3211 and #3231
  • Immediately mark outbound as complete when sending Mono or Object by @violetagg in #3250
  • Add possibility to delay the last flush operation by @violetagg in #3271, #3280 and #3282
  • Cache the infomation whether the request is websocket by @violetagg in #3354
  • Cache Content-Length when it is about to send the FullHttpResponse by @violetagg in #3355
  • Use doFinally in order to handle cancel and error signals by @violetagg in #3356
  • Initialise ChannelOperations#shortId on demand by @violetagg in #3357
  • Simplify HttpServerOperations#onInboundNext by @violetagg in #3375
  • Simplify HttpTrafficHandler#write by @violetagg in #3376
  • Separate handling for EMPTY_LAST_CONTENT by @violetagg in #3385
  • Reduce duplication by @violetagg in #3386
  • Simplify response status code check by @violetagg in #3390
  • Simplify Http2StreamBridgeServerHandler#write by @violetagg in #3391
• Other improvements
  • Add Unix Domain Sockets support on NIO transport by @violetagg in #3494
  • Make pending responses log messages consistent by @violetagg in #3239
  • Allow using SocketAddress proxies instead of just InetSocketAddress by @AlexProgrammerDE in #3243
  • Make MonoSend.MAX_SIZE configurable by system property by @VadimKirilchuk in #3276
  • Add Brotli support for HttpClient by @violetagg in #3331
  • HttpDecoderSpec#validateHeaders() specifies whether request/response headers are validated by @violetagg in #3370
  • Parse X-Forwarded-Prefix request header by @chemicL in #3436
  • Support allowPartialChunks in the HttpDecoderSpec by @reta in #3453
  • Add multi-release jar support by @violetagg in #3494

🐞 Bug fixes

• Do not add IdleTimeoutHandler while processing pipelined requests by @violetagg in #3124
• Always use remote socket address for the metrics by @violetagg in #3210
• Ensure HttpServerMetricsRecorder#recordServerConnectionInactive/Close is invoked for websockets by @violetagg in #3229
• Ensure ConnectionProvider metrics are disposed unconditionally when graceful shutdown by @violetagg in #3235
• Ensure ByteBuf#release is invoked for already sent HTTP/2 response by @violetagg in #3236
• When HttpOperations#afterMarkSentHeaders throws an error in HttpOperations#sendObject, ensure the ByteBuf is released just once by @violetagg in #3246
• Ensure HttpClient#reactorNettyVersion() does not throw NullPointException when loaded through -javaagent under JDK 1.8 by @KyoUK4n in #3266
• Fix HTTP/2 pool recordPendingSuccess/FailureAndLatency not recorded without timeout by @violetagg in #3252
• Close the connection when decoding exception happens by @violetagg in #3290
• Http2Pool: when applying acquireTimeout, check for current pending Borrowers by @violetagg in #3300
• When an explicit EventLoopGroup is configured ensure only one connection pool is created by @violetagg in #3321
• Do not record an exception when the request information is not available by @violetagg in #3352
• Create on demand the response object for Expect: 100-continue by @violetagg in #3362
• Always decode in an event loop by @violetagg in #3369
• Ensure the buffer is not released twice by @violetagg in #3448
• When terminating detach the connection from request/response objects by @violetagg in #3459
• Ensure body is sent when DELETE and Transfer-Encoding by @violetagg in #3481
• Delay sending the server preface when SNI is configured by @violetagg in #3484
• Ensure HttpInfos#version returns the correct protocol by @violetagg in #3487

📖 Documentation, Tests

• Clarify maximum websocket frame length configuration by @violetagg in #3116
• Validate zstd compression by @sullis in #3126
• Migrate reference documentation to Antora by @pderop in #3120, #3134, #3214, #3215, #3216 and by @violetagg in #3128, #3129, #3130, #3131, #3133, #3135, #3141
• Extend the documentation for the shared (default) ConnectionProvider and Event Loop Group by @violetagg in #3281
• Polish javadoc for HttpClient#compress by @izeye in #3349
• Update sources references in the reference documentation by @violetagg in #3429
• Fix typo in javadoc for allowPartialChunks setting by @andrross in #3471

Full Changelog: v1.1.17...v1.2.0